Really happy to see PubMed improving over time! One thing I'm missing is a recommendation service of articles that might be relevant for me. I used to read a l

Really happy to see PubMed improving over time! One thing I'm missing is a recommendation service of articles that might be relevant for me. I used to read a lot of Machine Learning/Math papers on arXiv and I have found arXiv-sanity [0] to be extremely useful, maybe something similar would be great as a part of PubMed functionality - being able to keep track of research which is relevant to the papers I've added to my favorites. Also, I'm slightly confused by the sort order in the search. I found four options for sorting the items while searching: * Default order * Pub Date * Journal * PMC Live Date IIUC "Default order" is not "sort by the number of citations/citation index", but that's what I typically want when I'm trying to figure out what are the most important/influential research in the field. [0]: http://www.arxiv-sanity.com/ http://www.arxiv-sanity.com/